/usr/share/gtk-doc/ is in libnice-doc 0.1.4-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gtk-doc/html/
/usr/share/gtk-doc/html/libnice/
/usr/share/gtk-doc/html/libnice/NiceAgent.html
/usr/share/gtk-doc/html/libnice/ch01.html
/usr/share/gtk-doc/html/libnice/ch02.html
/usr/share/gtk-doc/html/libnice/ch03.html
/usr/share/gtk-doc/html/libnice/ch04.html
/usr/share/gtk-doc/html/libnice/ch05.html
/usr/share/gtk-doc/html/libnice/home.png
/usr/share/gtk-doc/html/libnice/index.html
/usr/share/gtk-doc/html/libnice/index.sgml
/usr/share/gtk-doc/html/libnice/left.png
/usr/share/gtk-doc/html/libnice/libnice-Bind.html
/usr/share/gtk-doc/html/libnice/libnice-Debug-messages.html
/usr/share/gtk-doc/html/libnice/libnice-ICE.html
/usr/share/gtk-doc/html/libnice/libnice-Network-interfaces-discovery.html
/usr/share/gtk-doc/html/libnice/libnice-NiceAddress.html
/usr/share/gtk-doc/html/libnice/libnice-NiceCandidate.html
/usr/share/gtk-doc/html/libnice/libnice-Pseudo-TCP-Socket.html
/usr/share/gtk-doc/html/libnice/libnice-StunAgent.html
/usr/share/gtk-doc/html/libnice/libnice-StunMessage.html
/usr/share/gtk-doc/html/libnice/libnice-TURN.html
/usr/share/gtk-doc/html/libnice/libnice-Timer.html
/usr/share/gtk-doc/html/libnice/libnice.devhelp2
/usr/share/gtk-doc/html/libnice/pt01.html
/usr/share/gtk-doc/html/libnice/pt02.html
/usr/share/gtk-doc/html/libnice/pt03.html
/usr/share/gtk-doc/html/libnice/right.png
/usr/share/gtk-doc/html/libnice/style.css
/usr/share/gtk-doc/html/libnice/up.png